Display screen or portion thereof with graphical user interface



FIG. 1 is a front view of a display screen or portion thereof with a graphical user interface according to one embodiment; and,

FIG. 2 is a front view of a display screen or portion thereof with a graphical user interface according to another embodiment.

The outermost broken lines in the figures illustrate a display screen or portion thereof and form no part of the claimed design. 

CLAIM We claim the ornamental design for a display screen or portion thereof with graphical user interface, as shown and described. 